In a world of designer ice creams, sometimes the simplest can be the best. The full-bodied flavors of brown sugar combined with nutty toasted almonds are all it takes to give this easy-to-make frozen treat a sophisticated distinction. The alcohol in the base mixture acts like an “anti-freeze,” reducing the icy texture sometimes associated with lower-fat ice cream. For a little extra indulgence, try topping a scoop with some crumbled gingersnaps.